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Chords to a bass line

Let's follow the thought processes of chording this phrase.

MIDI

Chord 1.

The first bass note is C.
The note directly above C is G, the 5th of C.
The chord is C something.
The notes above the bass note are G, E, C, Bb and Db.

D.S (C) = C D E F G A B C    
  C       G         = C (no 3rd)
  C   E   G         = C
  C   E   G   Bb     = C7
  C   E   G   Bb   Db = C7b9

Chord 2.

The second bass note is C#.
The note directly above C# is G, the b5th of C.
Check to see if the chord is C#dim or C#m7b5.
The notes above the bass note are E, G and Bb.

D.S (C#) = C# D# E# F# G# A# B# C#  
  C#       G       = C#b5 (no 3rd)
  C#   E   G       = C#mb5
  C#   E   G   Bb   = C#dim

Chord 3.

The third bass note is D.
See how the bass line is moving up in semitones. That kind of writing always sounds great.
The note directly above D is A, the 5th of D.
The chord is D something.
The notes above the bass note are A, C, A, F and D.

D.S (D) = D E F# G A B C# D  
  D       A       = D (no 3rd)
  D   F   A       = Dm
  D   F   A   C   = Dm7

Chord 4.

The fourth bass note is D.
The note directly above D is Ab, the b5th of D.
Check to see if the chord is Ddim or Dm7b5.
The notes above the bass note are Ab, F, B, Ab and D.

D.S (D) = D E F# G A B C# D  
  D       Ab       = D(b5) (no 3rd)
  D   F   Ab       = Dmb5
  D   F   Ab   B   = Ddim


Music Theory


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